# A148683 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 22
5 66
6 227
7 758
8 2741
9 9861
10 36917
11 138933
12 535499
13 2077759
14 8190950
15 32516955
16 130479483
17 527198671
18 2147012696
19 8795672388
20 36264715700
21 150285288597
22 626008650470
23 2619473550761
24 11007963517106
25 46439591494941
26 196648771804289
27 835525524895916
28 3561426453988150